Windham Apts
Multifamily Housing in Seattle, WA · 420 BLANCHARD ST · 98121
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 72 (band B) |
| Site EUI | 48.5 kBtu/ft² |
| Source EUI | 108.1 kBtu/ft² |
| GHG emissions | 38 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 357,332 kWh |
| Natural gas | 5,899 therms |
| Gross floor area | 37,300 sq ft |
| Source record | seattle:19915:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 72 | 48.5 kBtu/ft² | 38 tCO₂e | |
| 2024 | — | — | — | |
| 2023 | — | — | 31 tCO₂e | |
| 2022 | 57 | -10 | 53.9 kBtu/ft² | 39 tCO₂e |
| 2021 | 67 | +2 | 50.2 kBtu/ft² | 37 tCO₂e |
| 2020 | 65 | +19 | 50.4 kBtu/ft² | 40 tCO₂e |
| 2019 | 46 | -1 | 65.9 kBtu/ft² | 41 tCO₂e |
| 2018 | 47 | 63.2 kBtu/ft² | 39 tCO₂e | |
| 2017 | — | 68.3 kBtu/ft² | 42 tCO₂e | |
| 2016 | 46 | -9 | 48.5 kBtu/ft² | 43 tCO₂e |
| 2015 | 55 | 46.0 kBtu/ft² | 41 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 420 BLANCHARD ST
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61513, -122.34223
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Windham Apts's energy grade?
Windham Apts scores 72 out of 100 on ENERGY STAR — band B (Above median (70–84)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Windham Apts use?
Its 2025 site energy-use intensity was 48.5 kBtu/ft² (108.1 kBtu/ft² source) across 37,300 sq ft, including 357,332 kWh of electricity and 5,899 therms of natural gas.
What are Windham Apts's carbon emissions?
Windham Apts reported 38 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 2025. Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
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Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:19915:2025.